[Boatanchors] Potentiometer Size

[Bill Stewart]

Tnx Doug, 

I forgot to mention its a carbon jobby and made by Clarostat. 

Bill  
----- Original Message ----- 
From: Troglodite at aol.com 
To: cwopr at embarqmail.com 
Sent: Friday, July 9, 2010 4:03:35 PM GMT -05:00 US/Canada Eastern 
Subject: Re: [Boatanchors] Potentiometer Size 



In a message dated 7/9/2010 1:55:38 P.M. Central Standard Time, cwopr at embarqmail.com writes: 

Is there a rule-of-thumb to indicate the wattage of a potentiometer by its physical dimensions?  I'm trying to figure the wattage of a 500K audio pot. that's about 1  1/16 " dia. by about 1/2 " (pot. only, switch is additional) long. 

Most carbon potentiometers of that size and value are about 1/2 watt. There are exceptions, like the old Allen Bradley JLU series which were 2 watts. Wirewounds are in a different category, but you won't find those often in values greater than about 5000 ohms. 

Doug Moore